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Timothy Warren

Timoth ... 10/27/2022

1995 Buick LeSabre Limited 6 Cyl 3.80L

Engine

Stalling while driving

While driving slow or fast while idling to stop it stalls and restarts we gotta do this three or four times and it runs bad when it goes it starts put putting.

1 Answer


Jimm

Jimm 11/1/2022

Possible Causes of Engine Hesitation or Stumble:

Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires

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